99 xj header option

[california1999]

Ok so I have got a cracked header and need to replace it, but should I just get a stock oem from rock auto? I have read that the apn header will not always work on a 99 and requires a lot of grinding. I plan on selling the jeep this year so is it really worth the extra work over a direct bolt on oem.

 

[Tim_MN]

The APN works great. I have put an APN on both a 98 and a 99. It took a total of about 30-45 seconds of grinding on the soft aluminum intake to make them fit together. All I had to do was knock down a few high spots in the casting.

 

[Dewidge]

APN went right on my '99. Well, once I got it seated right... No grinding though.

 

[Bjorn86]

I also did the APN on my 99. As already stated, a little grinding was needed but not much.

 

[california1999]

Ok sorry to ask such a dumb question but what is it that people are grinding, will it be obvious when I go to install it? I heard some people had to take it off several times before they got it.

 

[sunburned]

Not looking forward to the install, but I think I'm going to have to get a replacement header soon also. Definitely sounds like a big exhaust leak coming from the header/downpipe joint, I just can't place it yet. Probably in the collector like most people have.

 

[Tim_MN]

Mate them both together on the garage floor. If any grinding needs to be done I would grind on the intake manifold. Grind any rough casting areas that interfere (red circles). DO NOT grind on the smooth machined surfaces (white lines).


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[california1999]

ok thank you tim MN, just to make sure i am on the same page your just grinding the sides not the actual face of the header correct?

 

[Tim_MN]

Exactly. Do not grind on the smooth sealing surfaces.

 

[california1999]

Perfect!!!!! thank you for the information